Paul covers many key points in this video:

• put all your body and punch into the shot and follow through
• close to the goal as a warm-up, get your release point & wrist snap gauged -both hands
  – finding that balance of the snap with the stick’s pocket
  – use your wrist always
• get good base and get power from your hips & below
  – rotate the hips
  – follow through the back leg coming over on and through over to the front leg

Finding the right balance of having the right pocket (whipped or high-wall) and the wrist snap, and motion is not easy and it’s a challenge — many hours of practice and trial & error. And it’s unique to every player.